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/// \file B1/include/DetectorConstruction.hh
/// \brief Definition of the B1::DetectorConstruction class

/*在真实世界中, 确定材料需要两个信息: 材料的种类/物理状态与材料的几何位置.
在Geant4中, 也可以把确定材料分为确定材料的种类/物理状态与几何位置这两个步骤.
需要说明的是, 这里的材料不仅仅指屏蔽材料, 探测器也被包括在其中, 因为探测器的本质也是材料.
当然在实际程序中, 这些信息一般都被写在文件"DetectorConstruction.hh/.cc"中.
*/

#ifndef B1DetectorConstruction_h
#    define B1DetectorConstruction_h 1
#    include "G4VUserDetectorConstruction.hh"

class G4VPhysicalVolume;  // forward declaration
class G4LogicalVolume;

namespace B1
{

    /// Detector construction class to define materials and geometry.
    class DetectorConstruction : public G4VUserDetectorConstruction
    {
    public:
        DetectorConstruction() = default;
        ~DetectorConstruction() override = default;

        ///一般在此函数中指定材料的相关信息
        G4VPhysicalVolume* Construct() override;

        G4LogicalVolume* GetScoringVolume() const { return _fScoringVolume; }

    protected:
        G4LogicalVolume* _fScoringVolume = nullptr;
    };

}  // namespace B1

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#endif
